OK, so, after further research and testing, I learned the following:
1: It is not necessary to bind-mount all of /run - just /run/systemd/resolve does the trick.
2: There's no need to add "libreoffice-l10n-$LOCALE" to the packages.conf file - one of the packages already there must depend on it, since my latest solution still ends up with the bug solved even without modifying packages.conf.
I am submitting a patch which solves this bug. The patch should be applied to /etc/calamares/modules/mount.conf. I have tested this and verified that it works on Lubuntu 22.04 Jammy.
OK, so, after further research and testing, I learned the following:
1: It is not necessary to bind-mount all of /run - just /run/systemd/ resolve does the trick. l10n-$LOCALE" to the packages.conf file - one of the packages already there must depend on it, since my latest solution still ends up with the bug solved even without modifying packages.conf.
2: There's no need to add "libreoffice-
I am submitting a patch which solves this bug. The patch should be applied to /etc/calamares/ modules/ mount.conf. I have tested this and verified that it works on Lubuntu 22.04 Jammy.